Definition of aghastment in English:

aghastment

noun

obsolete
rare
  • In early use: †terror, fright, alarm (obsolete). Later: shock, horror.

Origin

Late 16th century; earliest use found in Thomas Nashe (d. c1601), writer. Originally from agast + -ment. In later use from either aghast or aghast + -ment.

Pronunciation

aghastment

/əˈɡɑːstm(ə)nt//əˈɡastɪm(ə)nt/